Show method of greasing, Civil Engineering

Assignment Help:

Method of Greasing : Greasing of fixed end requires 20 to 25 minutes. The lifting is hardly 10 mm, ensuring that the gap is created between saddle block and knuckle pin. Saddle is not lifted above collar to prevent lateral creep of the girder. Steel scraper is used to remove old grease, dust and dirt. The contact area is cleaned with oil. Grease is applied and then girder is lowered back.

Greasing of free end requires 45 to 50 minutes. Knuckle plate is tied to the saddle plate with wire rope having turn buckle arrangement to release the load from roller when the girder is lifted. When the girder is lifted about 10 mm and rollers are free, link plate and tooth bar are removed after opening the stud connections. All rollers should be taken out and cleaned with scraper and these are sand-papered with a fine sand-paper of zero grade. Rollers should be examined for any possible signs of flattening or minute cracks with a magnifying glass. Grease graphite grade 3 conforming to IS 508 is applied over the base plate evenly below the roller contact area. The rollers are then placed in position and grease applied at the top contact surface. Link plate and tooth bars are connected with care so that tooth bar is placed in the same inclination as per the drawing.

With the help of turn buckle of wire rope sling, the knuckle plate is lowered over the rollers. This will create gap between the saddle block and knuckle plate. Cleaning and greasing of this area is then carried out similar to the fixed end and girder is lowered back.


Related Discussions:- Show method of greasing

Structure analysis, In a cantilever truss it is very essential to find out ...

In a cantilever truss it is very essential to find out the reactions before analyzing it.

Define categories of scaling-underwater inspection of bridge, Define the Ca...

Define the Categories of Scaling? Scaling is classified into following three categories: i. Light scale - loss of surface mortar up to 5 mm deep, with surface exposure of co

Borrow pits - embankment construction, Borrow Pits Borrow pits are th...

Borrow Pits Borrow pits are the locations from where the embankment soil is obtained. The following guidelines govern the location of borrow pits : (a) They should be pref

Types of cross-drainge structures, Types of Cross-drainage Structures: ...

Types of Cross-drainage Structures: The following are the types of cross-drainage structures : (a) Culverts, having waterway upto 6 m. (b) Minor Bridges, having waterwa

Conditions of pumping performance, Question In conditions of pumping pe...

Question In conditions of pumping performance, how have to engineers determined use of radial flow pumps and axial flow pumps ? Answer Exact speed is usually define

Define steel substructure - underwater inspection of bridge, Define Steel s...

Define Steel substructure - underwater inspection of bridge? Steel is used as a structural material and as external protective cladding on concrete foundation elements. Steel f

Bedding of precast concrete paving units, Q. Sand layer vs. cement sand use...

Q. Sand layer vs. cement sand used as bedding of precast concrete paving units Cement sand is a mixture of sand and cement and it behaves as a cohesive mass once mixed. Usuall

What is contact pressure, What is 'contact pressure'? How does it depend on...

What is 'contact pressure'? How does it depend on the type of structure and type of soil? What is 'active zone' in soil? Define it with reference to the pressure bulb concept.

Testing of aggregates, Testing of Aggregates: For use in pavement, ro...

Testing of Aggregates: For use in pavement, road aggregates have to be strong, durable and of good shape. A well-graded aggregates adds to the stability of the layer. The fol

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd